Seal for flexible containers



De- 18, 1951 E. s. TUPPER SEAL FOR FLEXIBLE CNTAINERS Filed Dec. 1, 1948Patented Dec. 18, 1951 UNITED STATES PATENT OFFICE i 2,578,864 I Y' SEALFOR FLEXIBLE CONTAINERS Earl S. Tupper, Upton, Mass. ApplicationDecember 1, 1948, Serial No. 62,845 1 claim. (o1. 22a- 206) Thisinvention relates toV perfume, powder and medicant dispensers. Y p Y Itis an object of the present invention to provide a perfume, powder andmedicant dispenser wherein the perfume or powder is contained in achamber of flexible and resilient material which is squeezed to effect a`dispensing action and wherein upon being released will be returnedinstantly to its original shape and wherein the dispensing device servesas the packaging container in which the contents are delivered to theconsumer and wherein the container is made usable as a dispensing deviceby the breaking of an integral tip of the material.

It is another object of the present nventio to provide for a dispensingdevice of the flexible chamber type a suitable base for retaining theopen end of the chamber and for providing sufcient backing of thechamber wall within the base whereby to prevent leakage which mightresult when the chamber is squeezed or a breaking down of the baseconnection after constant use.

Other objects of the present invention are to provide a resilientchamber dispenser for perfume, powder and the like which is of simpleconstruction, easy to assemble, easy to prepare for use, tightly sealed,inexpensive to manufacture. convenient to use and eiicient in operation.

For other objects and for a, better understanding of the invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in whichv Figure l is aperspective View of the resilient dispensing device embodying thefeatures of the present invention.

Figure 2 is a sectional view, in elevation, taken on line 2-2 of Figure1.

Figure 3 is a side elevational view of a, dispenser particularly adaptedfor dispensing powder, the dispenser being held and squeezed fordispensing action.

Figure 4 is an enlarged sectional view taken through the connection ofthe base with the resilient chamber and showing the reinforcing memberfor the inner wall of the chamber, the View being taken on line 4--4 ofFigure 1.

Figure 5 is a fragmentary sectional view taken through the connection ofthe tube with the dispensing end of the flexible chamber of the form ofthe invention shown in Figures 1 and 2, the view being taken on line5--5 of Figure 2.

Figure 6 is a fragmentary sectional view of a modified form of thedevice shown in Figure 1 wherein a projection for nasal introduction isprovided for use of the device as a nasal spray.

perfume or a medicant Il which is normally closed at its upper end aswhen the perfume is rbeing delivered from the factory to the consumerand which is especially formed with a tip I2 having a hole I3. Toprepare the device for use, the A tip I2 is severed to open the hole I3.

Depending from the top and below the hole I3 is a hollow portion I4adapted to receive a tube I5 which is curved at its lower end and whichextends to the bottom of the device. The depending portion I4 is formedwith side passages I6 through which air may pass through the opening I 3when the squeezing action is eilected upon the chamber to draw theperfume through the tube I5 and to eject the same into the atmosphere.

The bottom end of the chamber I0 is formed with a flange I'I from whichdepends a skirt portion I8. This skirt portion is threaded as at I9 toreceive and retain a base 2| of rigid material. The lower end of theportion I8 is not threaded and extends into a peripheral recess 22formed in the base whereby to provide support for the lower end of theportion I8 and to prevent the same from moving inwardly. In order to becertain of the connection of the resilient chamber with the base and toprovide adequate sealing action, there is provided adjacent the threadsI9 but on the inner wall of the chamber a recess 23 receiving adepending flange 24 of a bottom reinforcing member 25. This member 25with flange 24 will positively retain the depending portion I8 withinthe base and will maintain the portion I8 in tight sealing engagementwith an external and upstanding threaded flange or portion 26 threadedonto the threads I9.

lt will be apparent that there is little opportunity for the portion I8to free itself of the base. The lower end of the flange 24 of thereinforcing member 25 will press the lower end of the depending portionI8 into the recess 22. Ii; will be seen that a, positive sealing actionis eiected. The upper end of the portion 26 will abut the ange orshoulder I'I.

As shown in Figure 6, an oriced nasal projection 21 is formed as the topof chamber I0 with a removable tip 28 similar to I2.

The chamber ID is formed of a plastic material which when released willreturn to its original shape instantly. The members 2l and 25 arepreferably formed of a more rigid plastic.

In Figure 3, there is shown a silghtly different type of chamber whereinthere is provided a plurality of openings 21 on the top thereof for the3 purpose of dispensing a powder or granular material 28. The sameoperation is performed upon the chamber as when dispensing a liquid suchas perfume as with the form of the invention above described. The sameseal is effected upon the bottom of the chamber.

While various changes may be made in the detail construction, it shallbe understood that such changes shall be within the spirit, and scope ofthe present invention as definedbytheappended claim.

I claim:

A dispensing device comprising a resilient;v squeeze chamber having adispensing opening at its upper end, said chamber having a dependingskirt portion partly threaded and free of threadson its lower end, abase having a peripheral groove adapted to receive the lower end of thedepending portion of the chamber, said base having an'up wardlyextending internally threaded peripheral portion against whichthedepending portion; of the chamber may.I be depressed, a reinforcingmember tted within the chamber andserving to urgethedepending portion.into. the recessof the. base. and.y against the upwardly. extendingpor-K tion thereof, saidv reinforcing membery having a peripheraldepending portion, said resilient.

squeeze chamber having an internal recess, said peripheral dependingportion of the reinforcing member lying within the recess, the lower endof the peripheral depending portion of the reinforcing member extendingover the groove of the base to retain the part of the depending portionof the resilient squeeze chamber therewithin.

EARL S. TUPPER.

REFERENCES, CITED The following references are of record in the le. ofthis patent:

UNITED STATES PATENTS Number; Name Date 363,247 Kneuper May 17, 1887380,041 Kneuper Mar. 27, 1888 506,355 Zwietusch Oct. 10, 1893 879,516Cantwell Feb. 18, 1908 1,107,283 Gamble Aug. 18, 191 4 1,328,937 WilburJan. 27,A 1920 1,655,678 Doi-ment Jan. 1'0", 19,28

2,408,058 Gauagner sept. 24, 194.6.

EOREIGN: PATENTS Number Country Datel 330,274- Erancer June 24, 1903'i

